tobey



e F. W. TOBEY.

DOOR CHECK.

` Patented Aug. 7, 1888.

Unirse diaries arena einen,

FRED. W. TCBEY, OF VATERBURY, CONNECTICUT, ASSIGNOR TO VILLIAIVI F.LEWIS, OF SAME PLACE.

DOORECHECK.,

SPECIFICATION forming part of Letters Patent No. 387,329, dated August'7, 1888.

Application lcd May 8, 1888. Serial No, 273,192.

To @ZZ whom, it may concern:

Be it known that I, FRED. WV. TOBEY, acitizen of the United States,residing at l/Vaterbury, in the county of New Haven and State ofConnecticut, have invented certain new and useful Imlirovements in DoorChecks and Springs, and I do hereby declare the following to be a full,clear, and exact description of theinvention,such as will enable othersskilled ro in the art to which it appertains to make and use the same.

My invention has for its object a combined door closer and buffer inwhich the use of air and duid cylinders shall be dispensed with,and

which will permit a door to be readily closed by a slow movement,butwhich when the door is closed quickly will check it just before itreaches the closed position, and will then Vautomatically close it witha slow movement,

2o thus wholly preventing slamming. With these ends in view I havedevised the simple and novel construction of which the followingdescription, in connection with the accompanying drawings, is aspecication, numbers be- 2 5 ing used to denote the several parts.

Figure 1 is a plan view illustrating the application of my invention andits operation in use; Fig. 2, a side elevation of the base-plate,showing the slide and dog, the latter beingin 3o position to check thedoor, the lever being removed; Fig. 3, a similar view, the dog being inthe position which permits the door to close gently, Fig. 4, an endelevation as seen from the right in Fig. 1 the door being removed andthe position of the parts corresponding with Fig. 2; Fig. 5, a similarend elevation, the posit-ion of the parts correspond ing with Fig. 3,and Fig. 6 is a detail view showing another style of spring applied to4o close the door.

1 denotes the jamb, and 2 the door.

8 is the base-plate,which is attached to the jamb by screws or .in anysuitable manner,and 4 a slide, which moves freely in ways 5, cast orotherwise formed on the base-plate. For

small doors the parts may all be blanked out and formed from sheetmetal. At the outer end of the attaching-plate is a plate, 6, formedintegral therewith, to which the buffer 7 is attached, This buffer maybe a block of rub- (Model.)

ber, as shown in the drawings, or one or more coillsprings may be used,if preferred. At the inner end of the slide is a plate, 8, which isadapted to come in contact with the buffer, as will presently be morefully explained.

9 denotes the closinglever, which is pivoted to anextension, 10, of thebase-plate, or, if preferred, suitable ears maybe provided above andbelow. The pivot upon which the closing-lever isjournaled is denoted by9. These changes in the details of construction, being matters whollywithin the judgment of the manufacturer, have not been deemed to requireillustration.

11 denotes a dog pivoted near the outer end of 65 the slide, the forwardend of which is provided with a head, 12, rounded on its under side, asat 13.

14. is an enlargement on the dog, the edge of which is rounded, as at15. The rounded edge 15 of the dog engages the outer edge of extension10,which,wheu the slide is moved backward, permits the dog to drop outof operative position, as in Fig. 3, and when the slide is moved forwardraises it upward to the operative position, as in Fig. 2. At the forwardend of the closing-lever is a slot, 1G, which is engaged by a stud, 17,on a bracket, 18, which is attached to the door. l1he inner end of theattaching-lever is ordinarily enlarged somewhat, as shown, and rounded,so as to swing freely, and is provided at its upperinner edge with alug, 19,which is adapted to enga-gc the head of the dog when the latteris in the raised position. The relative position of lng 19 and the headof the dog when the door is closed quickly is shown in Fig. 2, theposition ofthe lug being indicated by dotted lines.

2O is a lug at the lower inner edge of the closing-lever, the positionof which is back 0f 9o lug 19, as clearly shown in Fig. 1, there beingsufficient space between said lugs to allow the lower end of the head ofthe dog to drop between them, as will be more fully explained. llheaction of the lower lug is to raise the for ward end of the dog byengagement with the rounded head when the door is closed. Vhen the dooris closed quickly, the head of the dog does not have time to drop beforeit is struck by lug 19. Vhen the door is closed gently, 10o

however, the head of the dog is raised by lug 20, as shown in Fig. 2,and then drops down behind it, as shown in Fig. 3, so that lug 19 passesover the head ofthe dog, allowing the door to be entirely closed. The-relative positions of lugs 19 and 20,when the door is closed by agentle movement, is indicated by dotted lines in Fig. 3, the slide, dog,Ste., being shown in full lines. The special form of closingspring usedis not of the essence ofmy in vention. Any ordinary form may be used, asbest suits thejudgment or taste of the manufacturer.

In Fig. 1 I have shown alink, 21, pivoted to the head of theclosing-lever, and a closingspring, 22, one end of which is connected tothe free end of the link and the other to a pin, 23, projecting upwardfrom plate 6.

In Fig. 6 I have shown pivot 9u as extended upward and forming astud,around which the spring is coiled. One end of the spring is securedto the upper end of the stud, as clearly shown, and the other end to apin, 24, on the closing-lever. As already stated, these details ofconstruction are not of the essence of my invention, and may be variedwithin reasonable limits without departing from the principle thereof.The operation of the device is as follows: Vhenever the door is opened,the tendency of the spring is of course to close it. If it has beenopened but a short distance, or if it is closed gently by hand,when ithas nearly reached the closed position the head of the dog will belifted by lug 20 on the closing-lever, as in Fig. 2, and will drop downbehind said lug as soon as it has passed, as in Fig. 8. This will allowlug 19 to pass over the top of the dog, so that the door may be moved tothe closed position without obstruction. Vhen the door has been openedwide and is allowed to escape, or when it is closed quickly by hand, thehead of the dog, after being raised by lug` 20, will be engaged by lug19 before it can drop down. back and throws plate 8 at the end of theslide against the buffer,which at once recoils,check ing the door orthrowing it backward slightly toward the open position. Theclosing-spring acts at once, however, to throw the door to the closedposition, but with a slow movement, as the momentum has been whollyovercome. At this second movement the head of This moves the entireslide the dog will drop down back of lug 20 before it can be engagedbylug 19, so that lug 19 will pass over the dog, as shown in Fig. 2,thus a1 lowing the closing-spring to close the door. As the special adjustment by which the power of the closing-spring is regulated forms noportion of my present invention, I have not illustrated it in detail inthe drawings. In the form shown in Fig. 6 the nut at the bottom isloosened, and the stud is rotated to tighten the coils of the spring,and is locked at the desired adjustment by tightening up the nut again.The stud is provided with a double collar, 25, which tits in acorresponding recess in the arm, thus holding the arm down firmly and atthe saine time permitting it to turn freely. l

Having thus described my invention, I claim-- 1. A door closer andbuffer consisting, essentially, of a closing-arm pivoted to thejamb andconnected to the door and provided with lugs 19 and 20, a buffer and aslide upon the jamb, and a pivoted dog upon the slide, whereby When thedoor is closed quickly lug 20 raises the dog which is engaged by lug19,and the slide is carried against the buffer, which then recoils,allowing the dog to drop back of lug 20 and lug 19 to pass over it, sothat the door is closed without slamming.

2. The base-plate having'extension 10, the closing-lever pivoted theretoand having lugs 19 and 20, and a closing-spring, in combina tion withthe buffer, a slide engaging said buffer and carrying a pivoted doghaving an enlargement which engages the edge of the extension, and ahead which is engaged by said lugs, as and for the purpose set forth.

3. The base plate having ways 5, thel buffer secured to the base-plate,and the slide moving in said ways and having a plate,8,adapted to engagethe buffer, in combination with the

